3=REV(1)=PENOBSCOT BAY SPECIFICATION.pdf

(January 22, 2009 / Revision-1)

USCGC PENOBSCOT BAY (WTGB-107)

140 FOOT ICEBREAKING TUG

SPECIFICATIONS FOR DRYDOCK REPAIRS

Developed By:

LOUIS MIKEDIS

Commander (v) Maintenance and Logistics Command, Atlantic 300 E. Main Street, Suite (600) Norfolk, VA 23510-9102

USCGC PENOBSCOT BAY (WTGB-107) DRYDOCK AVAILABILITY 2009

Page i (Rev-1)

TABLE OF CONTENTS

Work Item Title Page

List of Sketches iii

Revisions Record iv

List of Consolidated References v

List of Consolidated Government-furnished Property x

List of Critical Inspection Items xi

Specification Feedback xii

Principal Characteristics xiii

General Requirements 1

1 Remove, Inspect, and Reinstall Propeller Shaft 9

2 Overhaul Shaft Seal Assembly 14

3 Remove, Inspect, and Reinstall Propeller 18

4 Perform Minor Repairs and Reconditioning of Propeller 22

5 Clean SSDG Exhaust Stacks 26

6 Renew Depth Indicating Transducer 29

7 Overhaul and Renew Sea Valves 32

8 Inspect and Test Relief Valves 37

9 Overhaul Steering Pump Motors 40

10 Overhaul Steering Pumps 42

11 Remove, Inspect and Reinstall Rudder Assembly 45

12 Perform Boat Boom Maintenance 48

13 Perform Anchor Windlass Maintenance 52

Page ii (Rev-1)

14 Preserve Weather Decks 55

15 Preserve Underwater Body – “100%” 58

16 Preserve Stern Tube 60

17 Renew Cathodic Protection System 62

18 Preserve Grey Water Collection and Holding Tanks - Partial 65

19 Routine Drydocking 68

20 Provide Temporary Logistics 72

21 Renew Section of J/W Piping for No. 2 MDE 74

22 Perform Inspection and Maintenance of Steering System 77

23 Renew Steering System Hydraulic Hoses 82

24 Renew Various Boat Boom Hoses 84

25 Reseal Cosmetic Polymeric Deck Covering Systems 86

Page iii (Rev-1)

List of Sketches

Work Item Sketch Number Page

This section is not applicable to this package.

Page iv (Rev-1)

Revisions Record

This page is used to record specification revisions, which may have occurred subsequent to a Revision 0 (Rev-0) package.

Information listed is intended to provide contractors and field unit personnel a means to ensure all the current specification revision pages are present when reviewing or utilizing this specification package.

DATE REV# WORK ITEM# CHANGES MADE

1/22/09 1 2 Changed GFP NSN from 2040-01-541-7688 to

2010-01-540-3303. Added requirement to abrasive blast or power tool clean face seal to SSPC-SP10 or SSPC-SP-11 , Near White finish.

1/22/09 1 24 Section 1.1 Changed scope from inspect hoses to renew hoses. Added list of hydraulic hoses for renewal.

1/22/09 1 24 Section 3.3 Deleted any reference to Change Request.

1/22/09 1 22 Sect 3.2.2 Added approximate amount of materials required.

1/22/09 1 10 Added new section for Repair facility operational bench test.

1/22/09 1 12 Level II Maintenance; Changed the following tasks items from Service & Inspect to Overhaul, Inspect & Preserve:

5-Main Winch, 6-Luff-Winch, 15 & 16 -Slew Drive Assembly & Flow Control Valves, Renew “High Pressure Filter” & “Return Filter”, Task 19

1/22/09 1 12 Sect 3.7 Renamed to Reconfigure existing drain lines. Sect 3.7.1 Reworded to reconfigure. Sect 3.7.2 Reworded new case drain lines vise extended case drain lines.

NOTE: All work item and paragraph numbers listed above for a given revision correspond to same numbers in the previous revision. This revised specification is self-contained with all of the above listed changes incorporated.

Page v (Rev-1)

List of Consolidated References

The below-listed documents form a part of this specification to the extent specified herein. Approval/publication dates or revision dates/numbers are also identified, to ensure that same document versions are used at time of specification writing and during contract execution. Electronic copies of the latest Editions of MLCA Standard Specifications are available on the Internet and may be accessed at the following Internet Uniform Resource Locator (URL) address:

http://www.uscg.mil/mlclant/vdiv/standard_specifications.asp.

Guidance for obtaining copies of all other documents referenced herein is provided in the solicitation.

Order of precedence. In the event of conflicts between text of this specification and the applicable references specified herein, order of precedence shall be in accordance with MLCA Standard Specification 0000_STD, paragraph 3.2 (Order of precedence), unless otherwise specified by the Contracting Officer (KO). The Contractor shall immediately notify the KO in writing of any perceived conflicts contained herein. Nothing in these documents, however, supersedes applicable laws and regulations, unless a specific exemption has been obtained.

FEDERAL AND MILITARY SPECIFICATIONS AND STANDARDS

Commercial Item Description (CID) A-A-59313, Nov 2003, Thread Compound; Antiseize, Zinc Dust-Petrolatum

MIL-A-18001, May 2005, Anodes, Sacrificial Zinc Alloy (Commercially Accepted - ASTM B418)

MIL-D-3134, Sep 1989, Deck Covering Materials

MIL-D-16791, Jan 1993, Detergents, General Purpose (Liquid, Nonionic)

MIL-STD-167-1, Nov 2005, Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited)

MIL-PRF-16173, 2006, Corrosive Preventive Compound, Solvent Cutback, Cold Application

MIL-PRF-17672, May 1995, Hydraulic Fluid, Petroleum, Inhibited http://www.uscg.mil/mlclant/vdiv/standard_specifications.asp

Page vi (Rev-1)

MIL-PRF-24613, Dec 1990, Deck Covering Materials, Interior, Cosmetic Polymeric

OTHER GOVERNMENT DOCUMENTS, DRAWINGS, AND PUBLICATIONS

DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0000_STD, 2006 Edition, General Requirements

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 1001_STD, 2004 Edition, Temporary Hull Accesses

Coast Guard Maintenance and Logistics Command Atlantic (MLCA) Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

Coast Guard Maintenance and Logistics Command Atlantic (MLCA) Standard Specification 3141_STD, 2004 Edition, Overhaul Electrical Rotating Machines

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 5000_STD, 2004 Edition, Auxiliary Machinery Systems

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 8634_STD, 2004 Edition, Drydocking

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 8635_STD, 2004 Edition, Provide Temporary Logistics

DRAWINGS

Coast Guard Drawing 101 WTGB 171-002, Rev T, Mast and Boom

Coast Guard Drawing 101 WTGB 243-001, Rev S, Shafting and Bearing Arrangement and Details

Coast Guard Drawing 101 WTGB 243-002, Rev -, Propulsion Shafting Arrangement

Coast Guard Drawing 101 WTGB 243-003, Rev -, Stern Tube Seal Type F.S.E.

Page vii (Rev-1)

Coast Guard Drawing 101 WTGB 245-001, Rev B, Propeller and Offsets

Coast Guard Drawing 101 WTGB 245-002, Rev B, Aluminum Pattern One Single Blade

Coast Guard Drawing 101 WTGB 256-001, Alt K, Sea Water Cooling System Diagram

Coast Guard Drawing 101 WTGB 259-001, Rev L, Diesel Exhausts & Steam Generator Exhausts System A & D

Coast Guard Drawing 101 WTGB 529-001, Rev K, Bilge and Ballast System, Diagram

Coast Guard Drawing 101 WTGB 529-002, Rev P, Bilge and Ballast System A & D

Coast Guard Drawing 101 WTGB 561-001, Alt H, Steering System Diag

Coast Guard Drawing 101 WTGB 561-002, Rev R, Hydraulic Steering System A & D

Coast Guard Drawing 101 WTGB 633-001, Rev D, Cathodic Protection

Coast Guard Drawing 101 WTGB 801-003, Rev C, Docking Plan

Coast Guard Drawing 101 WTGB 801-005, Rev H, General Arrangement, Main Deck and Above

Coast Guard Drawing FL 6713-201, Rev B, CRP-V850 Transducer (B-

14) Adapter Assembly

Coast Guard Drawing 179 SP 4400-003, Rev C, 64 x 40 Work Horse Prop 2150 SQ IN Total Blade Area

NAVSEA Drawing 803-921865, Rev R, Cathodic Protection Hull Zinc Anodes

PUBLICATIONS

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Jun 2006, Coatings and Color Manual

Coast Guard Technical Publication (TP) 3366, Section 583-A, Dec 2005, Boat Davit Hydraulic System

Page viii (Rev-1)

Coast Guard Technical Publication (TP) 3447, 12 Feb 2001, Sect E. SWBS 583, Steering System, Installation and Maintenance

Coast Guard Technical Publication (TP) 3474, April 2001, SWBS 233, Sect A, J/W System, Main Diesel Engine Support System

Coast Guard Technical Publication (TP) 3483, Section 580-A, April 2001, Manufacturer's Instruction Book-SWBS Groups 580-583, Anchor Windlass - Instructions

Coast Guard Technical Publication (TP) 3483, Section 580-B, April 2001, Manufacturer's Instruction Book-SWBS Groups 580-583, Anchor Windlass - Drawings

Coast Guard Technical Publication (TP) 4593C, March 2, 2004, SWBS 243, Section A, Seal, Shaft, Type F.S.E.

Raytheon V850 Color Echosounder, 2nd Edition, Mar 1993, Operation Manual

WYTM Lineshaft Alignment Analysis, Report No. 7715, 12/27/77

INDUSTRY STANDARDS

American Bureau of Shipping (ABS) 2, Rule Requirements for Survey After Construction, 2007, Part 7, Appendix Section 10, Guide for Bronze and Stainless Steel Propeller Castings

American Society of Mechanical Engineers (ASME) B16.34, 2004, Valves-Flanged, Threaded, and Welding End

American Society of Mechanical Engineers (ASME), PTC 25, 2001, Pressure Relief Devices

American Society for Testing and Materials (ASTM) D3951, 1998, Standard Practice for Commercial Packaging

ASTM International (ASTM) D4174, Reapproved 1999, Standard Practice for Cleaning, Flushing, and Purification of Petroleum Fluid Hydraulic Systems

ASTM International (ASTM) F992, 2006, Standard Specification for Valve Label Plates

International Standard For Organization (ISO) 484/2, 1981, Shipbuilding - Ship Screw Propeller - Manufacturing Tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50m, Inclusive

Page ix (Rev-1)

International Standard For Organization (ISO), 2953, 15 Apr 1999, Mechanical Vibration, Balancing Machines, Description and Evaluation

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-67, 2002 Edition, Butterfly Valves

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-72, 1999 Edition, Ball Valves with Flanged or Butt-Welding Ends for General Service

Manufacturers' Standardization Society of the Valve and Fittings Industry (MSS) SP-80, 2003 Edition, Bronze Gate, Globe, Angle and Check Valves

Page x (Rev-1)

List of Consolidated Government-furnished Property

The following is a list of property, which the Government will furnish. This list supersedes any other material obligations indicated or implied by referenced drawings.

WORK

ITEM

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED

COST

($/UNIT)

1 Y **Propeller shaft NSN: 2010-01-089-8123 1 ea. 12,750.00

2 N Shaft seal Assembly NSN 2010-01-540-3303 1 ea. 17,774.53.00

3 Y Propeller NSN: 2010-01-078-8216 1 ea. 42,812.00 6 N ***V850 Color

Echo Sounder NSN: 5845-01-518-7245 1 ea. 1,423.41

7 N 8” ABZ Model #397 Cast Iron Lug Type 316 Stainless Steel Disc & Stem.

EPBM Set equipped w/ABZ-

19 120 VAC

Electric Actuator

P/N 397-979/19-120 4 ea. 1,350.00

11 Y **Rudder NSN: 2040-01-115-3498 1 ea. 32,436.00 11 Y **Rudder stock NSN: 2040-01-115-5203 1 ea. 19,337.00 12 N Hydraulic Fluid N/A 55

Gallon s

10.00

19 N *Transducer cover plate

N/A 1 ea. 500.00

*Government-loaned property, which shall be returned to the vessel upon completion of the availability.

**New or refurbished equipment that the Government may provide for installation in place of existing equipment.

***Government-furnished property, which is to be supplied by either the vessel, Electronic Systems Support Unit (ESU) or local Electronic Support Detachment (ESD).

Page xi (Rev-1)

List of Critical Inspection Items

The following is a list of work items, which contain Critical Inspection reports, which the Contractor must complete within the first 25% of the availability contract period (see Std Spec 0000_STD, paragraph 3.6.2 (Inspection report particulars)):

Work Item Title

1 Remove Inspect and Reinstall Propeller Shaft

5 Clean SSDG Exhaust Stacks

11 Remove Inspect and Reinstall Rudder Assembly

12 Perform Boat Boom Maintenance

13 Perform Anchor Windlass Maintenance

16 Preserve Stern Tube

Page xii (Rev-1)

Specification Feedback

The intent of this section is to inform all users that a spec feedback mechanism is in place, and is located on the MLCA Naval Engineering Division’s website. Spec feedback is a very important part of our overall continuous improvement process, and is crucial to specification development. It will allow spec writers to capture all specification-related lessons learned, and avoid mistakes or ambiguities in follow-on availabilities.

All feedback will be reviewed, evaluated, and responded to in a timely manner.

If you have access to the CGWeb (Intranet), please use the following link, which will connect you to the MLCA(v) Naval Engineering website, for submitting your feedbacks:

http://webapps.mlca.uscg.mil/vdiv/specifications/feedback/default.cfm

If you do not have access to the CGWeb (Intranet), you may still submit your feedbacks, using the following web link:

http://www.uscg.mil/mlclant/VDiv/specs/specfeedback.htm http://webapps.mlca.uscg.mil/vdiv/specifications/feedback/default.cfm http://www.uscg.mil/mlclant/VDiv/specs/specfeedback.htm

Page xiii (Rev-1)

Principal Characteristics

Tug

Length overall 140' 0"

Length between Perpendiculars 130' 0"

Breadth, Extreme 37' 7-1/4"

Depth, Molded 18' 2-3/8"

Frame Spacing 1' 6"

Full Load (Winter) Draft (at ) 12' 1-1/2"

Full Load (Winter) Displacement 687 Long tons (LT)

Full Load (Winter) Center of Gravity

Above Base (KG) 13' 1"

Full Load Trimming Moment (Forward) 75.6 Ft-LT

Minimum Operating Condition Draft (at ) 11' 6-3/8"

Minimum Operating Condition Displacement 640 Long tons

Minimum Operating Condition Center of Gravity

Above Base (KG) 13' 4-1/4"

Minimum Operating Condition Trimming Moment

(Forward) 76.8 Ft-LT

Height of Vessel Above DWL Approx. 62' 0"

NOTE: Values above are for representative tug. Draft and longitudinal lever values provided above are for tugs in fresh water. Longitudinal lever values are provided to adjust tug's design drag of 1.0 feet by the stern.

Page xiv (Rev-1)

PROPULSION

Type Diesel-electric

Number of Units 2

Total Shaft Horsepower 2500

PROPELLERS

Number of Propellers 1 Number of Blades 4 Diameter 8' 6" Pitch Fixed Revolutions per Minute 305

Page 1 (Rev-1)

00000_DLA_FLT (11 Sept 2008)

General Requirements

1. SCOPE

1.1 Intent. This item describes the general requirements to be followed by the Contractor while conducting this availability.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0000_STD, 2006 Edition, General Requirements

Coast Guard Maintenance and Logistics Command Atlantic (MLCA) Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Jun 2006, Coatings and Color Manual

3. REQUIREMENTS

3.1 General. The Contractor shall conform to all requirements specified in Std Spec 0000_STD and in this item, as applicable, during the performance of this availability.

NOTICE!

The requirements of paragraph 3.1 (General) applies to all work under the scope of this contract, whether explicitly stated in work items or not, and also to all other work subsequently authorized by changes, modifications, or extensions to the contract.

3.2 Contractor-provided fire watch personnel. The Contractor

shall provide fire watch personnel and equipment.

3.3 Welding and brazing requirements. The Contractor shall

perform all welding and allied processes, and nondestructive inspection (NDI), in accordance with Std Spec 0740_STD.

Page 2 (Rev-1)

3.4 Term substitution – COTR for COR. The Contractor shall be aware that the term “COR” (Contracting Officer’s Representative) has been discontinued in favor of “COTR” (Contracting Officer’s Technical Representative); consequently, whenever “COR” is encountered in this specification package, including referenced standard specifications and other referenced documents, it shall refer to “COTR”, explicitly.

3.5 Small boat storage particulars. When a small boat (Motor

Surf Boat (MSB)/Motor Cargo Boat (MCB)/Rigid Hull Inflatable (RHI) boat) is removed as interference to Contractor-work, the Contractor shall provide a suitable pierside storage cradle, for safely storing said boat.

3.5.1 Cradle design. Ensure that the cradle meets the

following criteria:

• Be capable of safely supporting a boat weighing approximately 5100 pounds.

• Support the boat at the following locations:

o Along the full length of the flat portion of the keel.

o Forward and aft, in the locations similar to those provided by the shipboard davit cradle.

• Have the portions of the cradle directly contacting the hull or keel of the boat made from a homogeneous soft wood, such as Yellow Pine or Douglas Fir.

3.5.2 Boat protective cover. Provide a watertight cover with

raised wooden spreaders, to protect the small boat from nature, during the storage period.

3.5.3 Boat accessibility. Ensure the storage is located in the vicinity of the vessel, and is unrestricted, to allow for ship's force to complete maintenance, if required.

4. NOTES

4.1 Access to COMDTINST M10360.3. The COMDTINST M10360.3 may

be accessed at the following URL address:

http://www.uscg.mil/directives/cim.asp

4.2 QA inspection forms. QA inspection forms (QA-1 thru QA-5), required in Std Spec 0000_STD to be completed and submitted http://www.uscg.mil/directives/cim.asp

Page 3 (Rev-1) during preservation of “critical-coated surfaces”, are provided at the end of this item.

Page 4 (Rev-1)

QA-1: QUALITY ASSURANCE INSPECTION FORM - PRESERVATION CHECKLIST

CHECKPOINT 1 – COATING SYSTEM COMPLIANCE

Ensure all coatings are in compliance with COMDTINST M10360.3, Appendix C.

CHECKPOINT 2 - PAINT STORAGE

Ensure all coatings are kept at a temperature of 65 to 85°F at all times, unless otherwise specified by the coating manufacturer(s).

CHECKPOINT 3 - AMBIENT CONDITIONS

Ensure surface and surrounding temperatures are each between 50 and 90°F for water-based coatings, and 35 and 95°F for other coatings, unless otherwise specified by the coating manufacturer(s).

Ensure maximum relative humidity (RH) is as follows, from surface preparations through final curing of topcoat: 50% for tanks, voids, and vent plenum; and 85% for all other areas, unless otherwise specified by manufacturer(s).

Ensure surface temperature is at least 5°F above the dew point, unless otherwise specified by the coating manufacturer(s).

CHECKPOINT 4 - PRE-SURFACE PREPARATION

Remove surface contaminants (soluble salts, loose rust, mud, and marine growth) with low pressure fresh water wash down (maximum 5,000 psi). If oil and grease are present, perform solvent cleaning, as per SSPC SP-1.

CHECKPOINT 5 - SURFACE PREPARATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure cleanliness of prepared surface is as per specification (i.e.: SSPC SP-12, SP-11, SP-10…).

Verify surface anchor profile (1.5-3.5 mils for abrasive-blasted steel surfaces; 1.0 mil (minimum) for power-tool cleaned surfaces; 1.0-1.5 mils for abrasive-blasted aluminum surfaces); and 1.5 –2.5 for surfaces to be coated w/single coat of inorganic zinc).

Measure soluble salt conductivity (5 measurements per 1000 sqft) – maximum threshold: 70 microsiemens/cm for non-submerged surfaces and 30 microsiemens/cm for submerged surfaces.

CHECKPOINT 6 - PRIMER COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Verify proper mixing and stand-in (induction) times.

Ensure no paint is applied when the temperature is expected to drop to freezing before the paint has dried.

Ensure surfaces are completely dry, unless otherwise allowed by the Coating Manufacturer(s).

Verify wet film thickness at random, to prevent under or over application.

Brush out all runs, sags, drips, and puddles.

Perform visual inspection for holidays and other defects.

CHECKPOINT 7 – STRIPE COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure overcoating window is as per manufacturer’s instructions.

After primer coat (mist coat after inorganic zinc), brush-apply un-thinned coat of same primer paint over edges, weld seams, cut-outs, and areas of complex geometries @ 3-4 mils wet film thickness (WFT).

CHECKPOINT 8 – TOP COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure overcoating window is as per manufacturer’s instructions.

Verify proper mixing and stand-in (induction) times, as applicable.

Verify wet film thickness at random, to prevent under or over application.

Brush out all runs, sags, drips, and puddles.

CHECKPOINT 9 – FINAL INSPECTION

Verify final system dry film thickness.

Verify system cure for service resumption - U/W Body surfaces: 5-8 hours @ 77 degrees F; Potable water tanks: 7 days @ 77 degrees F.

Ensure potable water tank exhaust ventilation is maintained continuously from and during coating application through final system cure (minimum 7 days @ 77 degrees F.), to exhaust all solvent to the atmosphere and to prevent solvent entrapment.

CHECKPOINT 10 – RECORD KEEPING

Complete, sign, and submit all provided QA Inspection Forms.

Signature of Inspector:______________________________________________________Date:____________

Page 5 (Rev-1)

QA-2. QUALITY ASSURANCE INSPECTION FORM

ENVIRONMENTAL READINGS

(Use one sheet for each activity. Record conditions every four hours from before surface preparation to application of final coating system coat)

DATE TIME

ENTER ACTIVITY

(Surface preparation, primer coat, barrier coat, top coat, etc…)

LOCATION DEW

POINT

SURFACE

TEMP.

% REL.

HUMIDITY

SIGNATURE

OF

INSPECTOR

.Signature of Inspector:__________________________________________________Date:____________

Page 6 (Rev-1)

QA-3 QUALITY ASSURANCE INSPECTION FORM

SURFACE PROFILE LOG

Vessel Name And Hull Number:__________________________________________________

Work Item Title:_______________________________________________________________

Location Of Work (Including Frame Numbers):_____________________________________

Area (Square Feet):_____________

Surface Preparation Method:_____________________________________________________

Abrasive Manufacturer And Size:_________________________________________________

Degreasing Method Used:________________________________________________________

Number Of Hours Surfaces (Steel Only) Left Unpainted:______________________________

Sweep blasting performed to remove flash rusting (steel)? Yes/No:_____________________

Place Surface Profile Replica Tapes In The Spaces Provided Below, To Serve As Permanent QA record.

Maintain separate log for each area/location. When an Area Is Divided Into Separate Sections, Maintain A Separate Log for Each Section.

AVERAGE MILS

(IAW ASTM D4417,

METHOD C)

Place Surface Profile Replica Tape Here

Reading:__________ mils

• Place Surface Profile Replica Tape Here

Date and Time:__________________________________________________

Location of Surface Profile Measurements:___________________________________________________________

Signature of Inspector:____________________________________________________________________________

Page 7 (Rev-1)

QA-4. QUALITY ASSURANCE INSPECTION FORM

SURFACE SOLUBLE SALT CONDUCTIVITY LOG

Vessel Name and Hull Number:__________________________________________________

Work Item Title:_______________________________________________________________

Location of Work (including frame numbers):_______________________________________

Area (square feet):____________

DATE TEST LOCATIONS CONDUCTIVITY

(microsiemens/cm)

Date and Time:_________________________________________

Signature of Inspector:___________________________________

Page 8 (Rev-1)

QA-5. QUALITY ASSURANCE DATA FORM

DRY FILM THICKNESS (DFT) MEASUREMENTS IAW SSPC PA-2

(Use one sheet for each sequence)

Vessel Name and Hull Number:__________________________________________________

Work Item Title:______________________________________________________________

Coating Manufacturer:_________________________________________________________

Product Name:________________________________________________________________

Batch Number:________________________________________________________________

Induction Time:_______________________________________________________________

Coating System Sequence (Indicate whether: primer, touch-up primer, barrier coat, 3rd coat…):__________________

DFT

MEASUREMENT

NUMBER

LOCATION OF READINGS MEASURED DFT

Application Method (Airless, Conventional Spray, Rolled):____________________

Average DFT: __________________________________________________________

Date and Time: _________________________________________________________

Signature of Inspector: ___________________________________

Page 9 (Rev-1)

24310_MWS_FLT (05 Sep 2008) 140 WTGB (30 Jul 2008)

WORK ITEM 1: Remove, Inspect, and Reinstall Propeller Shaft

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to remove, inspect, and reinstall the propeller shaft.

1.2 Government-furnished property.

MTI ITEM

DESCRIPTION

NSN/PN QTY ESTIMATED

COST

($/UNIT)

Y **Propeller shaft NSN: 2010-01-089-8123 1 ea.

12,750.00

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Coatings and Color Manual

Coast Guard Drawing 101 WTGB 243-001, Rev S, Shafting and Bearing Arrangement and Details

WYTM Lineshaft Alignment Analysis, Report No. 7715, 12/27/77

American Society for Testing and Materials (ASTM) D3951, 1998, Standard Practice for Commercial Packaging

3. REQUIREMENTS

3.1 General.

3.1.1 Critical Inspection Report. The Contractor shall submit a critical inspection report (CIR) for the inspections listed in the following paragraph(s):

• 3.2.2 (Inspections).

Page 10 (Rev-1)

3.1.2 Related work item. The Contractor shall accomplish this work item in conjunction with "Remove, Inspect and Reinstall Propeller” and “Overhaul Shaft Seal Assembly” which are separate work item of this specification.

3.1.3 Interferences. The Contractor shall be aware that

interferences in way of work include, but are not limited to the following:

• Deck plates.

• Cat walk over the shaft.

• Rope guard.

• Fairwater.

• Stern tube seal system.

3.2 Work to be accomplished. Using Coast Guard Drawing 101 WTGB 243-001 as guidance, as applicable, the Contractor shall accomplish the following for the propeller shaft:

3.2.1 Removals.

• Mark existing shaft position, and match-mark shaft coupling bolts to their respective holes, to facilitate reinstallation procedures.

• Remove the shaft and attached components to a suitable repair facility. Ensure shaft is properly protected and supported at all bearing journals, at all times, until reinstallation.

3.2.2 Inspections. Clean the shaft free of all marine growth, and accomplish the following inspections (Submit CIR):

3.2.2.1 Visually inspect the following components, as

applicable, for excessive wear and other mechanical defects such as nicks, cracks, and corrosion, as applicable:

• Shaft surfaces.

• Bearing surfaces.

• All shaft and propeller associated fasteners.

• Stern tube surfaces.

• Couplings.

• Stern tube/shaft sealing systems.

Page 11 (Rev-1)

• Packing ring and glands.

NOTICE!

Before taking shaft runout readings, spin the shaft on a lathe for approximately two hours at the vessel’s maximum rated RPM to eliminate any sagging that may have occurred during handling and storage.

3.2.2.2 Accomplish the following measurements:

• Measure keys and keyways.

• Measure all bearing sleeve or journal diameters.

• Measure runouts for shaft taper, shaft straightness, and coupling end diameters.

With the key in-place, fit the shaft coupling to the shaft in shop and check the contact percentage by bluing. If the contact is less than 80%, the Contractor shall grind and hand stone the coupling hub to achieve a minimum of 80 percent contact, and verify by bluing again. Make a small inscription on the shaft to mark the coupling hub location and use it as a reference in final assembly. Measure and record the coupling face and bore runouts.

3.2.2.3 Perform nondestructive inspection of all bearing

sleeves, shaft tapers, coupling bolts, keyways, and welded repair surfaces, in accordance with Std Spec 0740_STD, Appendix C.

3.2.2.4 Inspect the shaft fiberglass covering for porosity as follows:

3.2.2.4.1 Visually inspect the plastic covering for evidence of lack of adhesion, and other defects.

3.2.2.4.2 Conduct a high voltage spark test of the covering at 250 to 300 volts per mil of glass reinforcement (approximately 15,000 volts for a four-ply covering). Pay particular attention to the joining line between sleeves, couplings, and shafts.

3.2.3 Reinstallation. Reinstall the propeller shaft to its original configuration and accomplish the following, using Coast Guard Drawing 101 WTGB 243-001, as applicable. Machine, grind, or hand-stone couplings, if necessary, to achieve an 80 percent contact.

Page 12 (Rev-1)

3.3 Government-furnished shaft. The Contractor shall be aware that the Government reserves the right to furnish a spare propeller shaft to be installed in lieu of the one removed. After a Change Request has been released and authorized by the KO, the Contractor shall transport the spare shaft to a suitable inspection facility, perform the inspections specified in paragraph 3.2.2 (Inspections), and submit a CFR.

3.4 Alignment between coupling flanges. The Contractor shall

check the motor/propeller shaft alignment when the vessel is waterborne (during sea trials), using WYTM Lineshaft Alignment Analysis, Report No. 7715 as guidance. Submit CFR.

NOTICE!

If alignment is out of tolerance, physical symptoms such as excessive shipboard vibrations and/or abnormal noise must be present in order to support the measurements. Otherwise, no adjustments are necessary.

3.4.1 Parallel or bore alignment. Position the coupling

flanges within 0.5" of each other and place a straight edge at the following points, Top/Bottom, and Outboard/Inboard. The bore or parallel misalignment shall not be greater than 0.005 inches.

3.4.2 Angular or Face Alignment. Bring the coupling flanges

forward to within 0.5" face gap at all points about the diameter of the flanges. Take measurements of face gap at four equally spaced positions on the flange diameters using feeler gauge.

Compare diametrically opposite face gap readings top to bottom, and inboard to outboard. Subtract the smaller of diametrically opposite readings from the larger. The resulting difference is proportional to the amount of angular or face misalignment.

These readings shall not exceed 0.0005 inches per inch of companion flange outside diameter.

3.5 Post-repair operational testing. In the presence of the

Coast Guard Inspector, the Contractor shall thoroughly test and prove the shafting system to be in satisfactory operating condition (see 4.1 (Equipment operation)). Conduct a sea trial to test the propeller shaft in all modes of operation for a minimum of 4 hours. Inspect and correct any excessive leakage, abnormal noise and excessive vibration.

4. NOTES

Page 13 (Rev-1)

4.1 Equipment operation. Coast Guard personnel will operate

all shipboard machinery and equipment during all operational tests.

4.2 A temporary support of 600 lbs +/-30 lbs is required at

Frame 73, approximately 7 inches from the shaft coupling flange in accordance with the WYTM Motor Alignment Report (Figure 5).

4.3 From paragraph 3.3 of the WYTM Motor Alignment Report:

Case Optimum 1 2

Gap 0.007 @ bottom

0.003 @ bottom

0.010 @ bottom

Offset 0.003 @ motor high

0.019 @ motor high

0.010 motor low

Bearing loads / Fore motor

8681 7683 9678

After motor 8722 11042 6402

Fore end stern

6641 2965 10316

After end stern

6699 (18.1 psi)

9051 (24.5 psi)

Page 14 (Rev-1)

24330_MWS_140 (30 Dec 2008)

WORK ITEM 2: Overhaul Shaft Seal Assembly

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to overhaul the shaft seal assembly.

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED COST

($/UNIT)

N Shaft seal Assembly NSN 2010-01-540-3303 1 ea. 17,774.53.00

2. APPLICABLE DOCUMENTS

Coast Guard Drawing 101 WTGB 243-002, Rev -, Propulsion Shafting Arrangement

Coast Guard Drawing 101 WTGB 243-003, Rev -, Stern Tube Seal Type F.S.E.

Coast Guard Technical Publication (TP) 4593C, March 2, 2004, SWBS 243, Section A, Seal, Shaft, Type F.S.E.

3. REQUIREMENTS

3.1 General.

3.1.1 Technical representative services. The Contractor shall provide an on-site qualified technical representative, familiar with the John Crane Type F.S.E. face seal assembly, who shall advise on manufacturer's proprietary information, dimensions, and clearances associated with the system, assist with proper repair methods, and ensure compliance with manufacturer's procedures and standards during disassembly, inspection, and reassembly of the John Crane Type F.S.E. face seal assembly.

The technical representative shall be a Warsila-Lipps, Inc.

technical representative or its licensee.

3.1.2 Interferences. The Contractor shall be aware that

interferences in way of work include, but are not limited to the following:

Page 15 (Rev-1)

• Propeller shaft.

• Propeller shaft coupling.

• Propeller shaft guard.

• Coupling shaft guard.

3.2 Seal overhaul particulars. The Contractor shall accomplish the following tasks, using Coast Guard Drawing 101 WTGB 243-002, Coast Guard Drawing 101 WTGB 243-003 and the John Crane Stern Tube Seal Technical Manual as guidance:

3.2.1 Removal. Disassemble and remove the existing shaft seal from the propeller shaft.

3.2.2 Inspections. Accomplish the following inspections, and

submit a CFR for each inspection:

3.2.2.1 Coupling. While water-borne and prior to sliding back the propeller shaft perform face to face coupling alignment for bench mark purposes.

3.2.2.2 Float. Measure the total float (thrust).

NOTICES!

1. Fabrication of temporary strong backs maybe required in order to measure the total float (thrust).

2.The maximum allowable float (thrust) should be 0.040 inches.

3.2.2.3 Shaft sleeves. After removal of all the seal

components, visually inspect the shaft sleeve surfaces and all the removed seal components for wear, defects and deterioration.

3.2.2.4 Replacement shaft seal kit. Under the supervision of

the technical representative, visually inspect the new Government-furnished seal kit for any defects.

3.2.3 Seal component renewal. Refurbish the shaft seal with

Government-furnished seal components, under the supervision of the Tech Rep. Ensure the following:

• The compression adapter-tool holes are plugged with renewed plugs, as required.

• The seal is installed with motor armature located in the center of its float (thrust) range.

Page 16 (Rev-1)

3.2.4 Adaptor plate assembly. Abrasive-blast or power tool

clean the adaptor plate assembly to “near-white” or “bare” metal, in accordance with SSPC-SP 10 or SSPC-SP 11, respectively; remove all foreign debris such as rust dirt or marine growth.

3.2.5 Seal air test. Do the following:

• Operate the inflatable seal and increase pressure to the manufacturer's recommended pressure.

• Visually inspect all pipe joints, to ensure they are tight.

• With seal inflated, shut off all supply valves, and monitor air leakage. Correct any discrepancy noted.

• Deflate the seal.

3.2.6 Seal water leakage test. After the vessel is waterborne, do the following:

• Operate inflatable shaft seal at normal pressure in accordance with manufacturer's instructions. If the seal is inflated using the ship's installed tank, refill the tank.

• Slowly open the seal drain valve and drain the seal cavity.

• Once seal cavity is drained, measure the seal leakage which shall not exceed one pint per minute. Take corrective action if the leakage is excessive.

• Align the seal water flush line for normal operation.

• Deflate the inflatable seal.

3.3 Face to face coupling alignment. The Contractor shall

perform face to face coupling alignment measurement. Allow the seal 24 hours to settle while the vessel is water-borne and re-perform face to face coupling alignment measurements, prior to submitting a condition found report. Submit a CFR.

3.4 Sea trials. The Contractor shall demonstrate proper

operation of the shaft seal assembly. Inspect and correct any water leaks, abnormal noise, and any binding caused by shaft seal in normal shaft operation. Submit a CFR.

Page 17 (Rev-1)

This section is not applicable to this work item.

Page 18 (Rev-1)

24500_MWS_FLT (18 Sep 2008) 140 WTGB (07 Mar 2006)

WORK ITEM 3: Remove, Inspect, and Reinstall Propeller

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to remove, inspect, and reinstall the propeller.

1.2 Government-furnished property.

MTI ITEM

DESCRIPTION

NSN/PN QTY ESTIMATED

COST

($/UNIT)

Y Propeller NSN: 2010-01-078-8216 1 ea. 42,812.00

2. APPLICABLE DOCUMENTS

MIL-PRF-16173, 2006, Corrosive Preventive Compound, Solvent Cutback, Cold Application

Coast Guard Drawing 101 WTGB 245-001, Rev B, Propeller and Offsets

Coast Guard Drawing 101 WTGB 245-002, Rev B, Aluminum Pattern One Single Blade

International Standard For Organization (ISO) 484/2, 1981, Shipbuilding - Ship Screw Propeller - Manufacturing Tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50 m, Inclusive

3. REQUIREMENTS

3.1 Protective and safety measures. The Contractor shall

accomplish the following:

• Before removing the propeller or propeller nut, fit a shore from the floor of the dock to one propeller blade near the root, to prevent shock transmission to main motor, as necessary.

Page 19 (Rev-1)

• Protect propeller blade edges and blade roots with suitable covers, at all times until reinstallation, to prevent damage.

3.2 Work to be accomplished. The Contractor shall accomplish

the following for the propeller, using Coast Guard Drawings 101 WTGB 245-001 and 101 WTGB 245-002 as guidance.

3.2.1 Removal. Remove the propeller to a suitable repair shop.

NOTICE!

If it becomes necessary to apply heat to facilitate propeller removal, ensure that the hub temperature never exceeds 500 degrees Fahrenheit; in addition, ensure that gland, packing ring, fill and vent plugs are removed, and the adjacent shafting and canvas under the blade edge guards are protected from flame impingement.

3.2.2 Inspection. Visually inspect the propeller for any

damage, cracks, and other defects. Examine and record the suction and pressure face thickness, blade tip profiles, leading and trailing edges, contours, track, width, diameter, taper, pitch, and keyway of the propeller in accordance with ISO 484/2, Class I. Submit a written CFR.

3.2.3 Polishing. Polish the propeller to a uniform 63 micro-

inch RMS finish.

3.2.4 Propeller hub fitting check. In the presence of the

Coast Guard Inspector and with the key in place, carefully check the fit of the propeller hub bore to the shaft taper by applying Prussian blue to the shaft taper. Accomplish the fit hub check by dipping the propeller onto the hub vertically.

3.2.4.1 Uniform fit. Obtain a uniform fit of 60 percent

contact over the taper, with a slightly heavier fit on the larger end. Do not heat the shaft taper to compensate for a poor fit.

3.2.4.2 Propeller fit. If the fit is less than 60 percent, hand grind/stone the propeller hub bore to achieve the required fit.

WARNING!

Do not machine the shaft taper.

Page 20 (Rev-1)

3.2.4.3 Location inscription. When 60 percent fit has been

obtained, make a small inscription on the shaft to mark the propeller location. Use this mark as a reference in final assembly.

3.3 Propeller Installation.

3.3.1 Cleaning. For the final assembly, the propeller bore and shaft taper surfaces shall be clean and free of bluing, lubricants, dirt, foreign particles, or any other substance, which would hinder moving the propeller along the taper.

Install the propeller with dry metal-to-metal contact to obtain the maximum frictional force for torque transmission. Renew the rubber O-rings and packing before reassembly, if applicable.

3.3.2 Assembly. With the propeller installed on the taper in

the same position as when fitted, install the propeller nut and drive up the propeller until it is advanced forward about 1/16" beyond the inscribed mark as specified in 3.2.4.3 (Location inscription). Lock the nut in place with an appropriate locking device.

NOTICE!

It is prohibited to use grease, oil, or other substances on the taper to help drive the propeller.

3.3.3 Void filling. When applicable, the Contractor shall fill all internal voids in the propeller hub and cap with rust preventive compound conforming to MIL-PRF-16173. Renew all brass plugs.

3.3.4 Adhere to the following warnings:

• Do not heat the propeller hub, to compensate for a poor fit on the shaft taper.

• Do not machine the shaft taper to achieve the required fit.

3.3.4.1 Lock propeller nut in place with new stainless steel

lock washer or monel cap screws.

Page 21 (Rev-1)

3.4 Propeller change-out. The Contractor shall be aware that

the Government reserves the right to furnish a propeller to be installed in-place of the one removed. When the Government exercises this right, the Contractor shall turn over the removed propeller to the Coast Guard PA as a MTI item. If a Change Request has been authorized and released by the KO, the Contractor shall inspect the Government-furnished propeller, and submit a CFR including any additional work that may be required to install the new propeller to the existing shaft.

4. NOTES

4.1 Propeller details. 102" diameter x 72.947" pitch at 0.7R, 4 blades, NiAl bronze alloy, ABS Type 4.

Page 22 (Rev-1)

24520_MWS_FLT (12 Sept 2008) 140 WLIC (30 Dec 20084)

WORK ITEM 4: Perform Minor Repairs and Reconditioning of Propeller

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform minor repairs and reconditioning of a designated propeller.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

MIL-STD-167-1, Nov 2005, Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited)

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

American Bureau of Shipping (ABS) 2, Rule Requirements for Survey After Construction, 2007, Part 7, Appendix Section 10, Guide for Bronze and Stainless Steel Propeller Castings

Coast Guard Drawing 101 WTGB 245-001, Rev B, Propeller and Offsets

Coast Guard Drawing 101 WTGB 245-002, Rev B, Aluminum Pattern One Single Blade

ASTM International (ASTM) D3951, Reapproved 2004, Standard Practice for Commercial Packaging

International Standard For Organization (ISO) 484/2, 1981, Shipbuilding - Ship Screw Propeller - Manufacturing tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50m, Inclusive

Page 23 (Rev-1)

3. REQUIREMENTS

3.1 Related work item. The Contractor shall accomplish the

work specified herein in conjunction with “Remove, Inspect, and Reinstall Propeller”, which is a separate work item in this specification package.

3.2 Requirements for repairs and reconditioning. The

Contractor shall accomplish the following:

3.2.1 General requirements. Perform minor repair and

reconditioning tasks on the surfaces of the designated propeller, including threaded holes, in accordance with ABS-2, Part 7, Appendix Section 10, Subsection 1 (Bronze Propellers), for the conditions defined in 4.2.1 (Conditions for minor repair and reconditioning). In addition, perform straightening, welding, heat-treating, re-pitching, and stress-relieving, as necessary, to restore the propeller to a serviceable condition, as defined in section 4.2.2 (Serviceable condition). Ensure that removal and/or addition of material should be limited to the minimum necessary to accomplish the required repairs.

3.2.1.1 All propeller tolerances must conform to the Class I

standard specified in ISO 484/2.

3.2.2 Balancing. Perform single-plane balancing of both

reconditioned propeller and cap on rotational balancing equipment to ensure freedom from vibration in accordance with MIL-STD-167-1 for Type II (internally excited) vibration;

observe the following requirements:

3.2.2.1 Material removal. Remove material as evenly as

possible from over the entire blade surface (both suction and pressure faces) but not closer to the blade edges than 10 percent of the blade width, to prevent "thin spots" when balancing the propeller.

3.2.2.2 Addition of weight. Add weight to inside the propeller cap by welding, if necessary, to balance the cap, ensuring that the added material is clear of the propeller nut, the locking key, and the end of the propeller shaft.

3.2.2.3 Restrictions. Ensure that the maximum permissible

residual unbalance does not exceed the value determined by the following formulas for the speeds specified in Table I below if no specific maximum permissible residual unbalance value specified on Coast Guard Drawing 101 WTGB 245-001 and Coast Guard Drawing 101 WTGB 245-002.

Page 24 (Rev-1)

TABLE I. Maximum permissible residual unbalance.

SPEED

(RPM) FORMULA

0 to 149 U = 0.177W 150 to 1,000 U = (400W)/(N x N) 1,000+ U = 4W/N Where U = Maximum allowable residual unbalance (ounce-inches) W = Weight of rotating part (pounds) N = Maximum operating speed (revolution/minute)

3.3 Post repair inspections. Upon completion of required

repairs and reconditioning, the Contractor shall accomplish the following inspections, and submit a CFR:

3.3.1 Measurements. Measure and record the propeller

dimensional tolerances, to ensure they match the requirement specified on Coast Guard Drawing 179 SP-4400-3 and ISO 484/2, Class I.

3.3.2 Nondestructive testing. Conduct non-destructive

inspection of all repaired areas, in accordance with Std Spec 0740_STD, Appendix C.

3.4 Post repair care and handling. Upon completion of all

repairs and inspections specified herein, the Contractor shall accomplish the following, prior to returning the propeller to the place of origin:

3.4.1 Polishing. Clean and polish all surfaces of the

propeller to a minimum of 63 micro-inches uniform finish.

3.4.2 Labeling. Legibly stamp the following on the propeller

hub: (1) propeller's pitch and diameter, and (2) date and location of the propeller reconditioning, (3) material composition, (4) weight, and (5) shaft RPM.

NOTICE!

Include the label data in the CFR.

3.4.3 Packaging. Preserve and package the reconditioned

propeller in accordance with ASTM D3951.

Page 25 (Rev-1)

4. NOTES

4.1 Propeller details. 102" diameter x 72.947" pitch at 0.7R, 4 blades, NiAl bronze alloy, ABS Type 4.

4.2 Definitions.

4.2.1 Conditions for minor repair and reconditioning.

4.2.1.1 Minor bends. Minor bends are those near the blade tip, normally not farther from the edge than one tenth of the blade section length, or bends outside the 0.95 radius (R). Minor bend should be limited to blade sections under 1-1/4 inches thickness and with a corrected deflection to less than 15 degrees.

4.2.1.2 Minor cracks. Minor cracks are those located within 2 inches of the blade edges and with lengths less than 2 inches.

In addition, surface cracks and cracks not exceeding 1/8" in depth or 1/4 of the local thickness, which ever is less, and not greater than 2 inches in length shall be defined as minor.

4.2.1.2 Minor patches. Minor patches are those patches applied to a blade where a small portion of the blade edge is missing (not over 2 square inches) and repairs may be made entirely by added weld metal.

4.2.1.3 Minor cavitation erosion. Weld repair of cavitated or eroded areas less than 2 square inches in surface area and which are less than 1/2-inch deep.

4.2.2 Serviceable condition. Serviceable condition is defined as being capable of functioning and performing in the same manner as an identical new propeller, although it may not have the appearance of newness.

Page 26 (Rev-1)

25901_MWC_FLT (21 Oct 2008) 140 WTGB (21 Oct 2008)

WORK ITEM 5: Clean SSDG Exhaust Stacks

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to clean the ship service diesel generator (SSDG) exhaust stacks.

1.2 Government-furnished equipment.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0000_STD, 2006 Edition, General Requirements

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 1001_STD, 2004 Edition, Temporary Hull Accesses

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Coatings and Color Manual

Coast Guard Drawing 101 WTGB 259-001, Rev L, Diesel Exhausts & Steam Generator Exhausts System A & D

3. REQUIREMENTS

3.1 General.

3.1.1 Interferences. The Contractor shall be aware that

interferences in way of work include, but are not limited to the following:

• Insulation.

• Piping.

• Manual speed control cable.

• Electric cable.

Page 27 (Rev-1)

3.1.2 Protective measures. The Contractor shall furnish and

install suitable covering to seal off and protect all non-affected surfaces/equipment and spaces in the vicinity of the work area against contamination during the performance of work.

Upon completion of work, remove protective material and inspect for the presence of contamination. Clean all equipment and spaces, contaminated due to improper protection, to original condition of cleanliness.

3.1.3 Safety precaution. The Contractor shall rig suitable

safety netting, to protect workers during possible falls, and to protect the Engine Room and machinery from falling tools.

3.1.4 Temporary access openings. Due to limited access to work areas, the Contractor may, with express permission of the COTR (via submission of a CFR), cut access holes to facilitate accomplishment of the work specified herein. Perform all work required to open and close the access openings in accordance with Std Spec 1001_STD.

3.2 Operational test - initial. Prior to commencement of work, the Contractor shall witness an operational pre-test (by Coast Guard personnel) of the exhaust stack system, to demonstrate existing operational condition. (Submit CIR).

• 3.4 (Inspection and report).

3.3 Cleaning. The Contractor shall clean the interior surfaces of the exhaust piping for the ship service generators, shown on Coast Guard Drawings 101 WTGB 259-001, to a condition free from soot, tar, and any other foreign matter as follows:

3.3.1 Disconnect the exhaust piping as necessary to facilitate cleaning.

3.3.2 Remove and retain the existing exhaust mufflers.

3.3.3 Thoroughly sweep, mechanically clean, and vacuum the

inte…